Can you please remove the "!!!" from the version file?
Update Failed
A syntax error was detected in /var/www/html/plugins/vdomah/excel/updates/version.yaml. The string "!!! Migration to Maatwebsite.Laravel-Excel version 3.x." could not be parsed as it uses an unsupported built-in tag at line 7 (near "3.0.1: !!! Migration to Maatwebsite.Laravel-Excel version 3.x.") at line 43 (near "/var/www/html/vendor/october/rain/src/Parse/Yaml.php").
Can you please remove the "!!!" from the version file?